1、 What is a condensate recovery device?

Industrial Condensate Recovery System
It is generated after heat exchange of steamHigh temperature condensate waterA device for collecting, pressurizing, and transporting back to a boiler or recycling system.

📌Purpose:

• Heat recovery (energy-saving)

• Recycling softened water (saving water and medicine)

• Stable boiler feedwater

• Reduce pollution and noise

2、 Basic working principle of condensate water recovery device

Core principle in one sentence:
Steam to water is collected, automatically pressurized, and transported for reuse

🔁Workflow (Step by Step)

① Steam heat exchange generates condensed water

• Steam releases heat in heat exchange equipment

• becomeHigh temperature condensate water at 80-100 ℃

② Drainage condensate from the drain valve enters the recovery device

• The drain valve discharges the condensed water

• Condensed water inflowRecycling device water collection tank

③ Liquid level control start stop power device

• Installation inside the water collection tankLevel gauge/level switch

• When the water level reaches the set height:

  • startPump or pneumatic drive device

• Automatic shutdown after water level drops

④ Pressurized delivery back to the boiler or return water system

• Pressurize the condensed water

• Transported to:

  • Boiler deaerator

  • Water supply tank

  • Condensed water return main pipe

⑤ Flash steam separation (optional)

• High temperature condensed water enters the low-pressure tank

• The generated flash steam is:

  • Discharged into the flash evaporation recovery system

  • Or import low-pressure steam points

3、 Structural composition of condensate water recovery device

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4、 Comparison of principles of different types of condensate water recovery devices

① Electric condensate water recovery device

• Power: motor+water pump

• Advantages: precise control, stable recycling

• Disadvantages: Power consumption, fear of high temperature cavitation

② Pneumatic condensate water recovery device

• Power: Compressed air

• Advantages: Explosion proof and safe

• Disadvantage: Requires gas source

③ Pneumatic condensate water recovery device (most energy-efficient)

• Power:Steam's own pressure

• Principle: Use steam to push the piston or diaphragm

• Advantages: No need for electricity, no need for gas, energy-saving

• Disadvantages: Complex structure, slightly higher cost

5、 Working principle of steam driven condensate water recovery device (key points)

Steam driven steam driven pump drives condensed water back to the boiler

• Using steam as a power source

• No electricity, no gas

• Especially suitable for:

  • High temperature, high pressure

  • flammable and explosive

  • No electric field combination

6、 Energy saving effect of condensate water recovery device

📌 1 ton of 90 ℃ condensate water ≈ saves 60-70 kg of standard coal

7、 Common Problems (Engineering Practice)

Q1: Why is the recycling pump prone to cavitation?
➡ The condensate temperature is high and the system back pressure is large, requiring a high-temperature resistant pump or steam driven device.

Q2: Why is a flash evaporation tank necessary?
➡ Prevent flash steam from impacting the pump body and improve system safety.

Q3: Where is the recycling device installed?
➡ Behind the drain valve and in front of the return water main.